== sanity test 60c: unlink file when mds full ============ 11:27:01 (1789054021)
create 5000 files
 - open/close 642 (time 1789054036.23 total 10.00 last 64.20)
 - open/close 1130 (time 1789054046.27 total 20.04 last 48.61)
 - open/close 1662 (time 1789054056.27 total 30.04 last 53.19)
 - open/close 2087 (time 1789054066.30 total 40.07 last 42.36)
 - open/close 2473 (time 1789054076.31 total 50.08 last 38.59)
 - open/close 2951 (time 1789054086.31 total 60.08 last 47.77)
 - open/close 3491 (time 1789054096.31 total 70.08 last 54.00)
 - open/close 4049 (time 1789054106.32 total 80.09 last 55.77)
 - open/close 4662 (time 1789054116.32 total 90.09 last 61.29)
total: 5000 open/close in 95.63 seconds: 52.28 ops/second
fail_loc=0x80000137
 - unlinked 0 (time 1789054125 ; total 0 ; last 0)
total: 5000 unlinks in 60 seconds: 83.333336 unlinks/second
fail_loc=0